* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #0b0f2e 0%, #1a237e 100%);
    color: #e0f7fa;
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

.stars-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.star {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    animation: twinkle var(--duration, 5s) infinite var(--delay, 0s);
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 0.2;
    }

    50% {
        opacity: 1;
    }
}

/* 返回按钮样式 */
.back-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1000;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(33, 150, 243, 0.2);
    backdrop-filter: blur(5px);
    border: 1px solid rgba(79, 195, 247, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 0 15px rgba(33, 150, 243, 0.3);
}

.back-btn:hover {
    background: rgba(33, 150, 243, 0.4);
    transform: translateX(-5px);
    box-shadow: 0 0 20px rgba(33, 150, 243, 0.5);
}

.back-btn i {
    font-size: 24px;
    color: #4fc3f7;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    padding: 70px 0 30px;
    position: relative;
}

.logo {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 20px;
}

.logo-icon {
    font-size: 3.5rem;
    color: #4fc3f7;
    margin-right: 15px;
    text-shadow: 0 0 20px rgba(79, 195, 247, 0.7);
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

h1 {
    font-size: 3.8rem;
    margin-bottom: 10px;
    text-shadow: 0 0 15px rgba(33, 150, 243, 0.7);
    letter-spacing: 3px;
    background: linear-gradient(to right, #4fc3f7, #29b6f6, #0288d1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 3s infinite;
}

.subtitle {
    font-size: 1.6rem;
    margin-bottom: 30px;
    color: #bbdefb;
    max-width: 800px;
    margin: 0 auto 40px;
    line-height: 1.8;
    text-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
}

@keyframes shine {
    0% {
        text-shadow: 0 0 10px rgba(33, 150, 243, 0.7);
    }

    50% {
        text-shadow: 0 0 20px rgba(33, 150, 243, 0.9), 0 0 30px rgba(33, 150, 243, 0.5);
    }

    100% {
        text-shadow: 0 0 10px rgba(33, 150, 243, 0.7);
    }
}

.intro-section {
    background: rgba(13, 19, 33, 0.8);
    border-radius: 15px;
    padding: 30px;
    margin: 40px 0;
    border: 1px solid rgba(33, 150, 243, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
}

.section-title {
    font-size: 2.4rem;
    margin-bottom: 25px;
    color: #4fc3f7;
    border-bottom: 2px solid #0288d1;
    padding-bottom: 10px;
    display: flex;
    align-items: center;
}

.section-title i {
    margin-right: 15px;
}

.intro-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    align-items: center;
}

.intro-text {
    flex: 1;
    min-width: 300px;
    font-size: 1.2rem;
}

.intro-text p {
    margin-bottom: 20px;
    line-height: 1.8;
    text-align: justify;
}

.intro-image {
    flex: 1;
    min-width: 300px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    transition: transform 0.3s ease;
    border: 2px solid rgba(79, 195, 247, 0.3);
}

.intro-image:hover {
    transform: scale(1.03);
}

.intro-image img {
    width: 100%;
    height: auto;
    display: block;
}

.missions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 50px 0;
}

.mission-card {
    background: rgba(13, 19, 33, 0.8);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid rgba(33, 150, 243, 0.3);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.mission-card:hover {
    transform: translateY(-10px);
    border-color: #29b6f6;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.mission-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(to right, #0288d1, #4fc3f7);
}

.mission-title {
    font-size: 1.8rem;
    color: #4fc3f7;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.mission-title i {
    margin-right: 10px;
}

.mission-year {
    font-size: 1.1rem;
    background: rgba(2, 136, 209, 0.2);
    padding: 5px 10px;
    border-radius: 20px;
    display: inline-block;
    margin-bottom: 15px;
}

.mission-details {
    margin-bottom: 15px;
}

.mission-details li {
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
}

.mission-details li i {
    color: #4fc3f7;
    margin-right: 10px;
    min-width: 20px;
    margin-top: 5px;
}

.achievement-section {
    background: linear-gradient(to right, rgba(2, 48, 89, 0.7), rgba(13, 19, 33, 0.8));
    border-radius: 15px;
    padding: 40px;
    margin: 60px 0;
    border: 1px solid rgba(33, 150, 243, 0.3);
    position: relative;
    overflow: hidden;
}

.achievement-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://img.zcool.cn/community/01f8c55d3b8a25a801211f9c8c6f1d.jpg') no-repeat center center;
    background-size: cover;
    opacity: 0.1;
    z-index: -1;
}

.achievement-title {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #4fc3f7;
    text-align: center;
}

.achievement-content {
    max-width: 900px;
    margin: 0 auto;
    font-size: 1.2rem;
    line-height: 1.8;
}

.achievement-content p {
    margin-bottom: 25px;
    text-align: justify;
}

.future-section {
    text-align: center;
    margin: 60px 0;
}

.future-title {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #4fc3f7;
    position: relative;
    display: inline-block;
}

.future-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(to right, #0288d1, #4fc3f7);
}

.future-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.future-card {
    background: rgba(13, 19, 33, 0.8);
    border-radius: 15px;
    padding: 30px;
    border: 1px solid rgba(33, 150, 243, 0.3);
    transition: all 0.3s ease;
}

.future-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
}

.future-icon {
    font-size: 3rem;
    color: #4fc3f7;
    margin-bottom: 20px;
}

.future-card-title {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: #bbdefb;
}

.future-card p {
    font-size: 1.1rem;
    line-height: 1.7;
}

footer {
    text-align: center;
    padding: 40px 0 20px;
    color: #90a4ae;
    border-top: 1px solid rgba(33, 150, 243, 0.2);
    margin-top: 50px;
    font-size: 1.1rem;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .back-btn {
        width: 45px;
        height: 45px;
    }

    .back-btn i {
        font-size: 20px;
    }

    header {
        padding-top: 80px;
    }
}